Renesas unveils Gen 3 R-Car system-on-chip for connected and autonomous cars
DOE selects 10 projects to enhance research into recovery of rare earth elements from coal and coal byproducts

Honda releases Honda Smart Home US energy and water consumption data

Honda has released more than 200 channels of Honda Smart Home US (HSHUS) (earlier post) energy and water consumption data—down to a one-minute resolution—covering the six-month period April-September 2015.

The Honda Smart Home showcases technologies that enable zero net energy living and transportation, including Honda’s home energy management system (HEMS), a proprietary hardware and software system that monitors, controls and optimizes electrical generation and consumption throughout the home’s microgrid.

The home is capable of producing more energy on-site from renewable sources than it consumes annually, including enough energy to power a Honda Fit EV for daily commuting. The home’s occupant will be able to use less than half of the energy of a similarly sized new home in the same area (Davis, California) for heating, cooling and lighting. The home is also designed to be three times more water-efficient than a typical US home.

In a post, Michael Koenig, the project leader for the Honda Smart Home, said that the data show overall water consumption was lower than expected, thanks largely to the thrifty water habits of the occupant family. For the first six months of data monitoring, the house was 40% below the best-practice estimate.

The monitoring data shows that while clothes washing and toilets consumed about the same amount of water as the best practice construction, our occupants were able to slash consumption via showers, baths and sinks, without sacrificing their quality of life. Low-flow fixtures play a role, but so does the conservation mindset.

—Michael Koenig



A Big Hand to Honda and California, where it is urgently needed.

In the not too distant future, Californians may have to replace their existing inefficient houses and vehicles with Honda (or similar) units, because water is getting too rare for an expanding population and water thirsty farming.

Desalting plants and improved farming methods may also be required.

Nick Lyons

@Harvey: Residential water use in California is not the big problem--most water here is used by agriculture. Huge savings could be had if we stopped growing water-intensive crops in the semi-desert (e.g. almonds--1 gallon/almond-- which are mostly exported from the state).


I agree with you but people have to eat (a lot) in our thro-away (over-weight) society and California has been an ideal place to grow good quality abondant low cost food stuff for many decades.

Israel has learnt how to farm with a lot less water. California could also learn how to selectively do so?


Drip irrigation uses half the water and increases crop yields, farmers will not do that because it costs money, water is cheap.


Rightly so SJC. According to the Discovery Channel, the West Coast will get so dry that farmers (and homes) may no longer have the choice to use improved water usage methods.

The acquifers are drying up and grounds are sinking in many places.

The drought is also getting very present in BC and Southern Alberta, Canada too. Most Glaciers are melting fast.

Will El-Nino 2016 make it better or worst?


The $10 billion water program will build 3 more large reservoirs and a recharge system for the aquifers. The land has sunk more than 10 feet, if it sinks too far the aquifers are permanently lost.

The comments to this entry are closed.